Across
- 2. simple machine that consists of a cylinder with a groove cut in a spiral on the outside
- 4. force a machine applies to an object
- 10. measure of the amount of force applied to a given area
- 11. device that helps us do work
- 14. amount by which a machine can multiply a force; calculated by diving the output force by the input force
- 15. combination of 2 wheels of different diameter ex. Doorknob
- 19. pair of wheels with teeth that interlink
- 21. measure of how the speed of the object is affected by a machine; calculated by dividing the input distance by the output distance
- 22. simple machine made up of a wire, rope, or cable moving on a grooved wheel; may be made up of one or many wheels; can be fixed in place or moveable
- 23. belt or chain to transfer energy from an energy source to an object
Down
- 1. purpose or task
- 2. a group of parts that work together to perform a general function, forming a complex machine
- 3. force applied to operate a machine
- 5. system in which simple machines all work together; parts of a complex machine that have just one function are called subsystems and often contain a simple machine
- 6. simple machine made up of a flat surface, such as a board, at an angle to another flat surface, such as the ground or a table top; ramp
- 7. tool or device made up of one basic machine
- 8. of the bicycle that transfer your energy to the back of the wheel
- 9. force that opposes motion
- 12. work together
- 13. simple machine that looks like an inclined plane, but is forced into an object
- 16. measurement of how well a machine or device uses energy; can be calculated by dividing mechanical advantage by speed ratio or by diving work output by work input
- 17. simple machine made up of a rigid bar or plank that rotates on a fixed object called a pivot or fulcrum
- 18. a central point where a mechanism turns
- 20. smaller group of parts within a complex machine that performs a specific function